Nut lock



Marsh 9,19%, www2 J. C. PASSMRE NUT LOCK Figed oct. 21, 1925 IM/ventola NUT LOCK.

Application filed October 21, 1525. l Serial No. 64,026.

To all whom t may concer/z:

Be it known that l, Josnrrr C. Passaronn, a citizen et the United States, residing at Coshocton, in the county ot Coshocton and State ot Ohio, have invented certain new and useful llinprovementsin Nut Locks, of which the following is a specification.

This invention relates to a nut lock and one object ot the invention is to provide an improved type of locking pin carried by the holt and movable into and out ot position for locking engagement with the nut, the pin or fastener being so constructed and mounted that it will he normally held in position 'for engaging the. nut, but permitted et heing readily moved toay releasing position when it is desired to tighten or remove the nut. Y

Another object oi' the invention is to so construct and mount the fastener that it may he permanently carried by the bolt, 'out pei initted ot heing moved to an inoperative yposition and extend longitudinally trom the 'free end oi"- the bolt in such position t-hat it will not interfere with the nut being put in` place or removed.

rino-ther object oie the invention is to provide a nut lock in which the fastener will he ot a simple construction and permitted ot being treed from locking engagement with the nut without heilig destroyed or rendered uniit for 'further use.

fhis invention is illustrated in the accompanying drawings, wherein,

Figure l is a view showing the improved nut lock partially in side el vation,V lout principally in longitudinal section,

Figure 2 is sectional view taken along the line 2 2 of Figure l, and

Figure I3 is a tragi'nentary longitudinal sectional view through the shank of the holt v-:ith the nut engaging fastener moved to an inoperative position.

'lhe holt which is indicated in general hy the numeral l is provided with a s'hank 2, having a head 3 at one end. IThe shank may he threaded for its entire length, or only for a portion of its length, and is provided with a longitudinally extending groove 4 which intersects the threads and is of a depth slightly greater than the depth ot the threads. The nut 5 which is screwed upon the shank of the holt after the bolt has been passed through alined openings formed in the boards c, or other members t0 be Secured, has its threaded holt receiving here orn'ied with grooves spaced from each other about the hereof the nut and adapted to successively register with the groove Li, as the nut is turned upon the holt. In the present illustration, the nut has been shown provided with tive of the grooves 7, but

it willhe understood that any number of grooves desired may he formed in the nut.

fitter the nut has heen screwed tightly upon the holt and rotation thereof stopped with one oit the grooves 7 registering with the groove /i of the holt, it is desired `to have the nut secured so that it cannot work loose. rherei'fore, there has been provided a fastener S which is torn'ied oi heavy wire or the like. This Yfastener is et a U-snaped construction to provide arms 9 and l0, one ot' which projects into the axially extending pocket ll et the holt shank, and the other ot which is adapted to engage in the groove l loi the holt and (zo-operating groove 7 ot the nut, so that the nut will he prevented trom working oose. 'The pocket 'll may, itso desired,

extend the full length ot theholt and there-` hy form n hollow holt which will he light in construction and at the same time very strong, or it may only extend for a portion ot the length ot the holtshank as illustrated in Figure l. The outer end portion of the pocketis of increased diameter to provide a seat l2 and this seat receives a perforated disc 13 held in place by an overlapping annular flange or lip 14s. the head or disc l5 through which the inner arm 9 oit the fastener extends is of a diameter materially greater than the diameter oi' the arm i), so that when the 'fastener is drawn outwardly, as shown in Figure 3, it may he tilted diametrically of the holt shank and the :tree end ot the outer arm 1,0 seated in the notch lo formed in the end oi the holt, it will he readily understood troni an inspection olf Figure i that when the fastener is drawn outwardly and tilted to the position shown, it will he so disposed with respect to the holt that the nut may he readily slipped along the fastener into and out of engagement with the holt. The tast-ener is to he normally held in an operative position, so that it will he prevented from accidentally moving out of locking engagementy with the nut. This is accomplished hy means of a Spring` 17 which is coiled about the inner 9 with one end The opening l5 in f nut is non' passed longitudinallyoi' the ers tended` 'fastener into engagement with the tree end oit the bolt shank and sereu'eduiion thebolt in the usinilma'nner until it the adjacent member'. The nut- `will then be tightened the desi-red amount and rota- `tion of the nut stopped vwith onel of the grooves 7 registering 4with the groove si. The `fastener is now drawn outwardly a suiii- `cient distanoe to move the end of the arm 10 out of the notch l@ and the fastener tilted to positionthe arm'lO in the groove 4f. ofthe bolt, so that when the spring" draws the fas4 tener inwardly to 'the position shown in Figure l, the arm will enter the groove 7 registering' with the `groote and ver);T se- Cureljv lool; the nut against further rotation. It vvill therefore `be seen that. as long the fastener is in an operative `position the nut cannot Work loose. `tunen it is desired to remove Vthe nut, or tighten it an additional amount, the `fastener is drawn outwardly and returned to the inoperative lposition, so that the nut is released and permitted of being tightened the desired extent,

or removed from the bolt. rlfhe nut look is therefore :very effective lin operation and 1s so constructed thatl 1t`1s not damaged and `prevented from being again used.

Havingl 'thus described the invention, what I claim is:

nut lool: comprising a threaded bolt having a longitudinally extending groove interseetingits threads and an axially e1;-

tendingI pocket openingl through its end7 the outer end portion of the Wallsofsaidpoehet being reduced in thijekness to "form an in ternalannular shoulder and lip extension, a dise seated against said shoulder and termed with an opening, the lip extension oft said bolt being turned inwardly to overlie said dise andengagethe outer face thereo'i'` about the opening, alU-shaped fastener having one arm entending'into said pocket through the openingof said dise and its other arm adapted to be slid `into and out ot the groove ot said "bolt, an abutment adja cent the tree end of theinner arm of `said fastener a spring coiled about'said inner arm. between 'said abutment and dise to jjvieldabl'y resist `outward movement of tho fastener to an inoperative position, 'and a nut soreived upon said bolt and having' its threaded bore formed with grooves to .be selectively moved into registry with the groote oi' said bolt and receive a portion of the outer arm of the vlastener jto vloeit theV nut against'turning. Y t i Intestimony whereof 'atiix inysijgnature.

JOSEPH C. PASSMORE. 

